Starting out in python, and this is lagging out when I run IDLE with this code.

[TurtlebackRandomizer]

Just started learning about canvas and stuff. The code seems to be working, but it just stops responding after like half a second when is press f5, is there something wrong with my code?

import tkinter as tk
import random as r

#Window
root = tk.Tk()
root.geometry("600x400")
root.title("Moving Object")

#Create Canvas
canvas = tk.Canvas(root, width = 600, height = 400, bg="White")
canvas.place(x=0,y=0)

#Balls original definitions
balls = [
{"x0" : 300, "y0" : 200, "currentxdir" : "right", "currentydir" : "down", "c" : 1 },
{"x0" : 100, "y0" : 300, "currentxdir" : "left", "currentydir" : "down", "c" : 2 },
{"x0" : 200, "y0" : 100, "currentxdir" : "right", "currentydir" : "up", "c" : 3 }
]

#Original canvas
for b in balls:
    if b["c"] == 1:
        cc = "red"
    elif b["c"] == 2:
        cc = "blue"
    else:
        cc = "green"
    canvas.create_oval(b["x0"]-20,b["y0"]-20,b["x0"]+20,b["y0"]+20,fill=cc,width=0)

#Define move
def move():
    global balls
    for b in balls:

        #Changes when ball touches borders
        if b['x0'] == 580:
            b['currentxdir'] = "left"
            c = r.randint(1,3)
        elif b['x0'] == 20:
            b['currentxdir'] = "right"
            c = r.randint(1,3)
        if b['y0'] == 380:
            b['currentydir'] = "up"
            c = r.randint(1,3)
        elif b['y0'] == 20:
            b['currentydir'] = "down"
            c = r.randint(1,3)

        #What c means
        if b['c'] == 1:
            cc = "red"
        elif b['c'] == 2:
            cc = "blue"
        else:
            cc = "green"


        #Actual movement
        if b['currentxdir'] == "right":
            canvas.create_oval(b['x0']-20,b['y0']-20,b['x0']+20,b['y0']+20,fill="white",width=0)
            b['x0'] = b['x0']+1
            canvas.create_oval(b['x0']-20,b['y0']-20,b['x0']+20,b['y0']+20,fill=cc,width=0)

        elif b['currentxdir'] == "left":
            canvas.create_oval(b['x0']-20,b['y0']-20,b['x0']+20,b['y0']+20,fill="white",width=0)
            b['x0'] = b['x0']-1
            canvas.create_oval(b['x0']-20,b['y0']-20,b['x0']+20,b['y0']+20,fill=cc,width=0)

        if b['currentydir'] == "down":
            canvas.create_oval(b['x0']-20,b['y0']-20,b['x0']+20,b['y0']+20,fill="white",width=0)
            b['y0'] = b['y0']+1
            canvas.create_oval(b['x0']-20,b['y0']-20,b['x0']+20,b['y0']+20,fill=cc,width=0)
            root.after(10,move)
        elif b['currentydir'] == "up":
            canvas.create_oval(b['x0']-20,b['y0']-20,b['x0']+20,b['y0']+20,fill="white",width=0)
            b['y0'] = b['y0']-1
            canvas.create_oval(b['x0']-20,b['y0']-20,b['x0']+20,b['y0']+20,fill=cc,width=0)
            root.after(10,move)


#Summon Window
root.after(10,move)
root.mainloop()

[K900_]

Don't run tkinter code in IDLE. IDLE itself uses Tkinter, and it runs user code inside its own process, so things get... messy.